Information on Grindelia

Latin NameGrindelia squarrosa
Other NamesGumweed
Part UsedLeaf, Flowers
Herb FormsTincture, bulk herb.
AffectsUrinary system, Integumentary system, Respiratory system
CautionsNone noted.
Botanical InfoA perennial in the Aster family with smooth round stems and divided ascending branches which end in sticky yellow flower heads.
DescriptionGrindelia has anti-inflammatory, antispasmodic, expectorant, and mild pain-relieving properties. It was formerly included in the United States Pharmacopoeia as an internal remedy for asthma, bronchitis, and other upper respiratory tract ailments. It is often blended with yerba santa, marshmallow root, licorice, and other respiratory herbs. Grindelia is used topically for burns, poison oak, and other skin rashes. The tincture is beneficial when useful locally for poison oak rashes. It has a mild pain-relieving effect, but its main action is that of a protective barrier against inadvertently spreading the rash to other parts of the body. Grindelia also acts as an irritant aquaretic and anti-inflammatory for chronic bladder infections.

Grindelia has a taste of ACRID, BITTER and a temperature of WARM.


Decoction1 cup 2-3 x daily
Tincture15-30 drops, 2-3 x daily

Ailments Treated by Grindelia

AilmentTreatment SupportApplication
Asthmarespiratory antispasmodictincture
Emphysema, mildexpectoranttincture
Poison oakanti-inflammatory, pain relievertea internally and externally
Whooping coughantispasmodic, expectoranttincture


Blumenthal, Mark et al. 1998. The Complete Commission E Monographs. Austin: American Botanical Council.
McGuffin, M. et al. 1997. Botanical Safety Handbook. Boca Raton: CRC Press.
Felter, H.W. and J.U. Lloyd. 1983. (1898). King's Dispensatory. Portland, OR: Eclectic Medical Publications.
Wren, R.C. 1988. Potter's New Cyclopaedia of Botanical Drugs. Essex: C.W. Daniel Co. Ltd.
Madaus, G. 1976. Lehrbuch der Biologischen Heilmittel. Hildesheim: Georg Olms Verlag.
Ellingwood, F. 1983. American Materia Medica, Therapeutics and Pharmacognosy. Portland, OR: Eclectic Medical Publications.